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CVE-2009-3726

37
FAUCET Score

CVE-2009-3726 describes a denial-of-service vulnerability in the NFSv4 client of the Linux kernel, affecting versions prior to 2.6.31-rc4. A malicious NFS server can trigger a NULL pointer dereference and system panic by sending a crafted response with incorrect file attributes. This vulnerability has a high severity CVSS score of 7.8, indicating a critical impact (system crash) with low attack complexity and no authentication required. While not actively exploited in the wild, an exploit (EDB-10202) exists, though there is no evidence of widespread community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.31CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:rc3:*:*:*:*:*:*
2.2.27CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.2.27:*:*:*:*:*:*:*
2.4.1CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.4.1:*:*:*:*:*:*:*
2.4.2CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.4.2:*:*:*:*:*:*:*
2.4.3CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.4.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.8HIGH

AV:N/AC:L/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
12.00%
Probability of exploitation in next 30 days
EPSS Percentile
95.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-10202 · Oct 15, 2009
This CVE's current EPSS score of 0.1200 is in the 93rd percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: MRG for RHEL-5Fixed in: kernel-rt-0:2.6.24.7-139.el5rt
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: kernel-0:2.6.9-89.0.26.EL
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel-0:2.6.18-164.9.1.el5
View patch

Vendor Advisories (1)

redhatCVE-2009-3726Important

kernel: nfsv4: kernel panic in nfs4_proc_lock()

Oct 22, 2008

References

git.kernel.org
lists.opensuse.org / opensuse-security-announce/2009-11/msg00007.html
lists.opensuse.org / opensuse-security-announce/2009-12/msg00002.html
lists.opensuse.org / opensuse-security-announce/2009-12/msg00005.html
lists.opensuse.org / opensuse-security-announce/2010-02/msg00005.html
lists.vmware.com / pipermail/security-announce/2010/000082.html
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/37909
secunia.com / advisories/38794
secunia.com / advisories/38834
secunia.com / advisories/40218
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6636
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9734
debian.org / security/2010/dsa-2005
kernel.org / pub/linux/kernel/v2.6/testing/v2.6.31/ChangeLog-2.6.31-rc4
Vendor Advisory
mandriva.com / security/advisories
mandriva.com / security/advisories
openwall.com / lists/oss-security/2009/11/05/1
openwall.com / lists/oss-security/2009/11/05/4
redhat.com / support/errata/RHSA-2009-1670.html
redhat.com / support/errata/RHSA-2010-0474.html
securityfocus.com / bid/36936
spinics.net / linux/lists/linux-nfs/msg03357.html
ubuntu.com / usn/usn-864-1
vupen.com / english/advisories/2010/0528